linux-kernel - [PATCH AUTOSEL 4.18 028/131] misc: ti-st: Fix memory leak in the error path of probe()

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Date:   Sun, 2 Sep 2018 13:03:33 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Anton Vasilyev <vasilyev@...ras.ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL 4.18 028/131] misc: ti-st: Fix memory leak in the
 error path of probe()

From: Anton Vasilyev <vasilyev@...ras.ru>

[ Upstream commit 81ae962d7f180c0092859440c82996cccb254976 ]

Free resources instead of direct return of the error code if kim_probe
fails.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@...ras.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 drivers/misc/ti-st/st_kim.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 5ec3f5a43718..14a5e9da32bd 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -756,14 +756,14 @@ static int kim_probe(struct platform_device *pdev)
 	err = gpio_request(kim_gdata->nshutdown, "kim");
 	if (unlikely(err)) {
 		pr_err(" gpio %d request failed ", kim_gdata->nshutdown);
-		return err;
+		goto err_sysfs_group;
 	}
 
 	/* Configure nShutdown GPIO as output=0 */
 	err = gpio_direction_output(kim_gdata->nshutdown, 0);
 	if (unlikely(err)) {
 		pr_err(" unable to configure gpio %d", kim_gdata->nshutdown);
-		return err;
+		goto err_sysfs_group;
 	}
 	/* get reference of pdev for request_firmware
 	 */
-- 
2.17.1